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Acta Metall Sin  1997, Vol. 33 Issue (7): 690-696    DOI:
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MECHANISMS OF COMPATIBLE PLASTIC DEFORMATION BETWEEN THE γ-LAMELLAE IN TWO PHASE TiAl-BASE ALLOY
LIANG Wei;YANG Dezhuang (Harbin institute of Technology; Harbin 150001) (Taiyuan University ofTechnology; Taiyuan 030024)
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LIANG Wei;YANG Dezhuang (Harbin institute of Technology; Harbin 150001) (Taiyuan University ofTechnology; Taiyuan 030024). MECHANISMS OF COMPATIBLE PLASTIC DEFORMATION BETWEEN THE γ-LAMELLAE IN TWO PHASE TiAl-BASE ALLOY. Acta Metall Sin, 1997, 33(7): 690-696.

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Abstract  Mechanisms of compatible plastic deformation in three types of twin-related γ-lamellae have been studied. It was shown that the mechanisms of compatible plastic deformation of both crossing and not crossing lamellar boundary exist in 120°-rotational twin related lamellae. In true twin related lamellae, however, the compatible plastic deformation does not cross the lamellar boundaries. Besides, in pseudo twin related lamellae,the plastic deformation is incompatible.
Key words:  TiAl-base alloy      γ-phase      deformation compatibility     
Received:  18 July 1997     
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[3] LIANG Wei; LI Qiang; LIU Huiting; YANG Dezhuang (Taiyuan University of Technology; Taiyuan 030024)(Harbin Institute of Technology; Harbin 15000l)(Manuscript received 1995-05-24; in revised form 1995-11-03). MECHANICAL TWINNING IN DOUBLE-PHASE TiAl BASE ALLOY WITH A LAMELLAR STRUCTURE[J]. 金属学报, 1996, 32(2): 154-158.
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